Search for charginos with a small mass difference to the lightest supersymmetric particle at √s= 189 GeV

L3 Collaboration

doi:10.1016/S0370-2693(00)00488-3

Scientific article

English

Search for charginos with a small mass difference to the lightest supersymmetric particle at √s= 189 GeV

Contributors

L3 Collaboration

Collaborators

Achard, Pablo; Ambrosi, Giovanni; Bourquin, Maurice; Braccini, Saverio; Chamizo Llatas, Maria; Deglon, Patrick; Delmeire, Evelyne; Extermann, Pierre; Field, John; Kienzle, Maria-Novella; Muheim, Franz; Pohl, Martin; Produit, Nicolas

; Sciarrino, Deborah

Published in

Physics letters. B, vol. 482, no. 1-3, p. 31-42

Publication date

2000

Abstract

A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb−1 of data collected at 189 GeV in 1998 with the L3 detector. Mass differences between the chargino and the lightest supersymmetric particle below 4 GeV are considered. The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. No evidence for charginos is found and upper limits on the cross section for chargino pair production are set. For the first time at LEP2, in the case of heavy scalar leptons, chargino mass limits are obtained for anyX ±/L-X 0/L mass difference.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

L3 Collaboration. Search for charginos with a small mass difference to the lightest supersymmetric particle at √s= 189 GeV. In: Physics letters. B, 2000, vol. 482, n° 1-3, p. 31–42. doi: 10.1016/S0370-2693(00)00488-3

Article (Published version)

Identifiers

PID : unige:47334
DOI : 10.1016/S0370-2693(00)00488-3

Additional URL for this publication

http://www.sciencedirect.com/science/article/pii/S0370269300004883

Journal ISSN

0370-2693

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229downloads

Creation

16/01/2015 19:43:00

First validation

16/01/2015 19:43:00

Update

13/10/2025 21:42:58

Status update

14/03/2023 22:56:06

Last indexation

10/11/2026 17:15:39

Search for charginos with a small mass difference to the lightest supersymmetric particle at √s= 189 GeV

Contributors

Collaborators

Published in

Publication date

Abstract

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation